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RS-232 Serial Connector
The RS-232 COM port is used to connect the DVR to a PC (optional updating procedure) or
to connect an external device like a DVR controller (optional). The required settings to use
the RS-232 port can be configured in the DVR settings.
RS-232 / DE-9M Serial Port Pin Configuration Table
Signal Type
DCD In
Rx
Tx
N/C
GND
N/C
RTS
CTS
N/C
17 |
P a g e
Pin 1
Figure 6 DE-9M Serial Port
Pin Number
1
2
3
4
5
6
7
8
9
Table 7. RS-232 Pin Configuration
Pin 9
Description
Carrier Detection Signal (not
used)
RS232 Receive
RS232 Transmit
No Connection
System Ground
No Connection
RS232 Request To Send
Signal
RS232 Clear To Send Signal
No Connection
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